RT9172-25GG

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short circuit current limit

Package: TO-252-3 (DPAK)

Essence: The RT9172-25GG is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and stabilize the voltage supply.

Packaging/Quantity: The RT9172-25GG is available in a TO-252-3 package, also known as DPAK (Plastic Package). It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V - 6V
• Output Voltage Range: 1.2V - 5.5V
• Dropout Voltage: 0.4V @ 1A
• Output Current: Up to 1.5A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9172-25GG has three pins:

1. VIN (Pin 1): Input voltage pin. Connects to the power supply.
2. GND (Pin 2): Ground pin. Connected to the common ground reference.
3. VOUT (Pin 3): Output voltage pin. Provides the regulated output voltage.

Functional Features

• Low Dropout Voltage: The RT9172-25GG exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1.5A, this voltage regulator can handle high current demands.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range using external resistors, allowing flexibility in various applications.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection to prevent damage due to excessive heat.
• Short Circuit Current Limit: It features a short circuit current limit to protect the device and connected components in case of a short circuit.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - High output current capability meets demanding power requirements. - Adjustable output voltage provides versatility. - Thermal shutdown protection prevents overheating. - Short circuit current limit protects the device and connected components.

Disadvantages: - None reported.

Working Principles

The RT9172-25GG operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. When the input voltage exceeds the desired output voltage, the pass transistor adjusts its resistance to maintain a stable output voltage. The regulator continuously monitors the output voltage and adjusts the pass transistor accordingly to compensate for any changes in load or input voltage.

Detailed Application Field Plans

The RT9172-25GG finds application in various electronic devices that require a stable and regulated power supply. Some common application fields include:

1. Consumer Electronics: Used in smartphones, tablets, portable media players, and other battery-powered devices to regulate the voltage supplied to different components.
2. Automotive Electronics: Employed in automotive systems such as infotainment systems, navigation units, and engine control modules to ensure stable voltage supply.
3. Industrial Equipment: Integrated into industrial machinery, control systems, and automation equipment to provide reliable and regulated power.
4. Telecommunications: Utilized in networking equipment, routers, switches, and communication devices to maintain a consistent voltage level.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar characteristics and package options.
2. LT1084: High current, low dropout voltage regulator suitable for demanding applications.
3. LM1117: Fixed output voltage regulator available in various voltage options.

These alternative models offer similar functionality and can be considered as substitutes for the RT9172-25GG based on specific requirements.

Word count: 539 words